The Simple Guide: Above-Ground Pools VS In-Ground?

The Simple Guide: Above-Ground Pools VS In-Ground?

Above-ground pool care doesn’t have to feel like a chemistry lesson! Most of the chemical rules you would follow in an in-ground pool are the same ones used in an above-ground one.

There are a few key differences every above-ground owner should know..

1️⃣ The Liner Is More Exposed

Above-ground pools usually have vinyl liners that sit directly against the wall and floor, with minimal buffer.

➡️ This means:

  • They’re extra sensitive to direct chlorine contact

  • Susceptible to staining

  • Can easily fade or wrinkle with chemical fluctuation

➡️ This is a huge reason why tablets should never touch the liner.

  • Tabs sitting on your liner = bleached spots, and stains.

  • Always use a chlorine floater so the tab dissolves safely and evenly throughout the pool.

NOTE: Tablets should never go directly in the skimmer or pool—use a floating dispenser, an automatic chlorinator, or an alternative method instead. Whether in or above ground.

2️⃣ Volume Is Smaller (So Chemistry Moves Faster)

Above-ground pools usually hold less water, which means:

The only impact is that consistent weekly testing and balancing is just as essential as with an in-ground.

3️⃣ Heavier Sun Exposure

Above-ground pool walls and liners are usually exposed to more direct sunlight than in-ground pools. This extra sun exposure can:

➡️ Warm the water faster
➡️ Burn off chlorine more quickly
➡️ Fade or weaken the liner over time
➡️ Lead to more frequent chemical adjustments

Using stabilizer (CYA) helps protect chlorine from UV loss, while a solar cover limits sun exposure, reduces evaporation, helps retain heat overnight, and supports more consistent water balance.

The Bottom Line

Above-ground and in-ground water chemistry is basically the same!

  • Same targets
  • Same products 
  • Same weekly routine

Keep tablets in a floater, keep your chemicals balanced, and your above-ground pool will stay as clear as any inground system on the block.

Caring for an above-ground pool doesn’t have to be complicated. Our Above-Ground Pool Care Kits make it simple. 

See what’s included!